<br><div class="gmail_quote">On Fri, Dec 18, 2009 at 4:25 AM, Broggi, Pomme <span dir="ltr"><<a href="mailto:pomme.broggi@capgemini.com">pomme.broggi@capgemini.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div>
<div><font size="2" face="Arial"><span>Hello,</span></font></div>
<div><font size="2" face="Arial"><span></span></font> </div>
<div><font size="2" face="Arial"><span>I have created my
own octree, if I show my ground using one actor, between starting
of rendering loop and first render of my ground actor, 10 s are
needed. If I use 16 actors to display the same ground
(128/128), and I show all parts at the same time, 60 s are needed.
</span></font></div>
<div><font size="2" face="Arial"><span>What happens, why
the first render is so slow, why is it so more slow to display 16 smalls actors
than 1 big actor?</span></font></div>
<div><font size="2" face="Arial"><span></span></font> </div>
<div><font size="2" face="Arial"><span>Objects used to
create vtk actors are :</span></font></div>
<div><span>
<p><font size="2"><font face="Arial">vtkPoints * pPoints = vtkPoints::New();
</font><font color="#008000"><font color="#008000"><font face="Arial">//Liste des
points du maillage</font></font></font></font></p>
<p><font size="2"><font face="Arial">vtkPolyData * pPolyData = vtkPolyData::New();
</font><font color="#008000"><font color="#008000"><font face="Arial">// Objet
comprenant les points, les cellules, et les donnees (valeurs profondeur) de
notre maillage</font></font></font></font></p>
<p><font size="2" face="Arial">vtkPolyDataMapper * pMapper= vtkPolyDataMapper::New(
);</font></p>
<p><font size="2"><font face="Arial">vtkCellArray * pCells = vtkCellArray::New();
</font><font color="#008000"><font color="#008000"><font face="Arial">//Liste des
cellules qui vont constituer notre maillage</font></font></font></font></p>
<p><font color="#008000"><font size="2" color="#008000" face="Arial">vtkFloatArray *
pScalars = vtkFloatArray::New(); // Liste des valeurs de la profondeurs (sert
pour la color map)</font></font></p>
<p><font color="#008000"><font size="2" color="#008000" face="Arial"></font></font> </p>
<p><font color="#008000"><font color="#008000"><span><font size="2" color="#000000" face="Arial">Thanks for your
answer.</font></span></font></font></p>
<p><font color="#008000"><font color="#008000"><span><font size="2" color="#000000" face="Arial">Pômme</font></span></font></font></p><font size="2" face="Arial"><br></font></span></div></div></blockquote><div><br>All you have shown there is instantiating some objects. Can you make the smallest possible compilable example of your issue and send it to us?<br>
<br clear="all">Thanks,<br><br>David <br></div></div>